How to Convert Persian Digits in variable to English Digits Using Culture?

Question

I want to change persian numbers which are saved in variable like this :

string Value="۱۰۳۶۷۵۱"; 

to

string Value="1036751";

How can I use easy way like culture info to do this please?

my sample code is:

List<string> NERKHCOlist = new List<string>();
NERKHCOlist = ScrappingFunction(NERKHCO, NERKHCOlist);
int NERKHCO_Price = int.Parse(NERKHCOlist[0]);//NERKHCOlist[0]=۱۰۳۶۷۵۱ 

<= So it can not Parsed it to int
And This is in my function which retun a list with persian digits inside list items

protected List<string> ScrappingFunction(string SiteAddress, List<string> NodesList)
{    
    string Price = "null";
    List<string> Targets = new List<string>();
    foreach (var path in NodesList)
    {
        HtmlNode node = document.DocumentNode.SelectSingleNode(path.ToString());//recognizing Target Node
        Price = node.InnerHtml;//put text of target node in variable(PERSIAN DIGITS)
        Targets.Add(Price);
    }
    return Targets;
}

Jig

Do you mean Scrapping or Scraping? – Mel

Answer 1

I suggest two approaches to handle this issue(I Create an extension method for each of them):

1.foreach and replace

public static class MyExtensions
{
     public static string PersianToEnglish(this string persianStr)
     {
            Dictionary<char, char> LettersDictionary = new Dictionary<char, char>
            {
                ['۰'] = '0',['۱'] = '1',['۲'] = '2',['۳'] = '3',['۴'] = '4',['۵'] = '5',['۶'] = '6',['۷'] = '7',['۸'] = '8',['۹'] = '9'
            };
            foreach (var item in persianStr)
            {
                persianStr = persianStr.Replace(item, LettersDictionary[item]);
            }
            return persianStr;
     }
}

2.Dictionary.Aggregate

public static class MyExtensions
{
      public static string PersianToEnglish(this string persianStr)
      {
            Dictionary<string, string> LettersDictionary = new Dictionary<string, string>
            {
                ["۰"] = "0",["۱"] = "1",["۲"] = "2",["۳"] = "3",["۴"] = "4",["۵"] = "5",["۶"] = "6",["۷"] = "7",["۸"] = "8",["۹"] = "9"
            };
            return LettersDictionary.Aggregate(persianStr, (current, item) =>
                         current.Replace(item.Key, item.Value));
      }
}

More info about Dictionary.Aggregate: Microsoft

Usage:

string result = "۱۰۳۶۷۵۱".PersianToEnglish();

Marque

Answer 2

Simply Use the code below :

private string changePersianNumbersToEnglish(string input)
{
  string[] persian = new string[10] { "۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹" };

   for (int j=0; j<persian.Length; j++)
      input = input.Replace(persian[j], j.ToString());

   return input;
 }

Mcdaniel

It still returns a Persian string! Any idea? – Cormorant

Please change the argument orders in Replace function ;) – Horologium

Answer 3

USE Culture To convert the number from any language to any language

Functions:

public static string ConvertDigitChar(this string str, CultureInfo source, CultureInfo destination)
{
    for (int i = 0; i <= 9; i++)
    {
        str = str.Replace(source.NumberFormat.NativeDigits[i], destination.NumberFormat.NativeDigits[i]);
    }
    return str;
}

public static string ConvertDigitChar(this int digit, CultureInfo destination)
{
    string res = digit.ToString();
    for (int i = 0; i <= 9; i++)
    {
        res = res.Replace(i.ToString(), destination.NumberFormat.NativeDigits[i]);
    }
    return res;
}

How to use the functions:

var fa = CultureInfo.GetCultureInfoByIetfLanguageTag("fa");
var en = CultureInfo.GetCultureInfoByIetfLanguageTag("en");
string str = "۰0۱1۲2۳3۴4۵5۶6۷7۸8۹9";
string r1 = str.ConvertDigitChar(en, fa);
string r2 = str.ConvertDigitChar(fa, en);
int i = 123456789;
string r3 = i.ConvertDigitChar(fa);

Result:

r1: "۰۰۱۱۲۲۳۳۴۴۵۵۶۶۷۷۸۸۹۹"

r2: "00112233445566778899"

r3: "۰۱۲۳۴۵۶۷۸۹"

Callen

Useful solution, Specially using Culture, Thanks. – Millennium

Getting numbers from culture feels more confidence to me :) – Whitewash

Answer 4

I wrote this extension method to convert Arabic and Persian digits in an string to its Latin representation

public static class Extensions
{
    public static string ConvertDigitsToLatin(this string s)
    {
        var sb = new StringBuilder();
        for (int i = 0; i < s.Length; i++)
        {
            switch (s[i])
            {
                    //Persian digits
                case '\u06f0':
                    sb.Append('0');
                    break;
                case '\u06f1':
                    sb.Append('1');
                    break;
                case '\u06f2':
                    sb.Append('2');
                    break;
                case '\u06f3':
                    sb.Append('3');
                    break;
                case '\u06f4':
                    sb.Append('4');
                    break;
                case '\u06f5':
                    sb.Append('5');
                    break;
                case '\u06f6':
                    sb.Append('6');
                    break;
                case '\u06f7':
                    sb.Append('7');
                    break;
                case '\u06f8':
                    sb.Append('8');
                    break;
                case '\u06f9':
                    sb.Append('9');
                    break;

                    //Arabic digits    
                case '\u0660':
                    sb.Append('0');
                    break;
                case '\u0661':
                    sb.Append('1');
                    break;
                case '\u0662':
                    sb.Append('2');
                    break;
                case '\u0663':
                    sb.Append('3');
                    break;
                case '\u0664':
                    sb.Append('4');
                    break;
                case '\u0665':
                    sb.Append('5');
                    break;
                case '\u0666':
                    sb.Append('6');
                    break;
                case '\u0667':
                    sb.Append('7');
                    break;
                case '\u0668':
                    sb.Append('8');
                    break;
                case '\u0669':
                    sb.Append('9');
                    break;
                default:
                    sb.Append(s[i]);
                    break;
            }
        }
        return sb.ToString();
    }
}

Threewheeler

This one changes both Arabic and extended Arabic digits. – Enjambment

Answer 5

You need to parse them first, using e.g. Int32.Parse() with the correct cultural specifier. Once you have it as a plain integer, it's simply a matter of calling ToString() on it, again with the correct cultural specifier.

An alternative solution is to walk the string character by character and just replace any character that is a Persian digit with the corresponding (west) arabic numeral. Other characters can then be preserved as-is, if required.

If the string really contains a number, you should go with the integer parsing method. If it is not just a number, but really a phone number, serial number etc, you might need to use the replacing algorithm instead.

Candescent

See documentation for Int32.Parse Method (String, IFormatProvider) – Increase

I'd go with TryParse though, this is prone to exceptions – Increase

Parse() won't do so well with phone and serial numbers. – Dannettedanni

Answer 6

You can manually convert them like so

    char[][] numbers = new char[][]
    {
        "0123456789".ToCharArray(),"persian numbers 0-9 here".ToCharArray()
    };
    public void Convert(string problem)
    {
        for (int x = 0; x <= 9; x++)
        {
            problem.Replace(numbers[0][x], numbers[1][x]);
        }
    }

I don't know the persian numbers so you will have to add them into the char array.

Pitch

Thanks but as i said i want to use culture info – Jig

Answer 7

there is a simple way to do this

public static string Fa2En(string str)
{
  return str.Replace("۰", "0")
            .Replace("۱", "1")
            .Replace("۲", "2")
            .Replace("۳", "3")
            .Replace("۴", "4")
            .Replace("۵", "5")
            .Replace("۶", "6")
            .Replace("۷", "7")
            .Replace("۸", "8")
            .Replace("۹", "9");
}

Swordtail

Answer 8

use this static class to change normalize number easily:

public static class Numbers
{
    public static string ChangeToEnglishNumber(this string text)
    {
        var englishNumbers = string.Empty;
        for (var i = 0; i < text.Length; i++)
        {
            if(char.IsNumber(text[i])) englishNumbers += char.GetNumericValue(text, i);
            else englishNumbers += text[i];
        }

        return englishNumbers;
    }
}

Sample:

string test = "۱۰۳۶۷۵۱".ChangeToEnglishNumber(); // => 1036751

Campbellite

string.Concat(nums.Select(c => char.GetNumericValue(c) < 0 ? c.ToString() : char.GetNumericValue(c).ToString(CultureInfo.InvariantCulture))); – Shaving

Answer 9

The Saeed's Solution is Ok,But For Double Variables you Must Also replace "٫" Character To "." , So You Can Use :

private string ToEnglishNumber(string strNum)
{
string[] pn = { "۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹", "٫" };
string[] en = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9","." };
string chash = strNum;
for (int i = 0; i < 11; i++)
    chash = chash.Replace(pn[i], en[i]);
return chash;
}

Dunbar

Answer 10

    public static string ToEnglishNumber(string input)
    {

        var englishnumbers = new Dictionary<string, string>()
        {
            {"۰","0" }, {"۱","1" }, {"۲","2" }, {"۳","3" },{"۴","4" }, {"۵","5" },{"۶","6" }, {"۷","7" },{"۸","8" }, {"۹","9" },
            {"٠","0" }, {"١","1" }, {"٢","2" }, {"٣","3" },{"٤","4" }, {"٥","5" },{"٦","6" }, {"٧","7" },{"٨","8" }, {"٩","9" },

        };

        foreach (var numbers in englishnumbers)
            input = input.Replace(numbers.Key, numbers.Value);

        return input;
    }

Boneblack

You can convert both Arabic and Persian Number to English number with this code. – Boneblack

Answer 11

Here my code convert Persian digits in variable to English , By extension method(Can use with dot after your expression)

private static readonly string[] pn = { "۰", "۱", "۲", "۳", "۴", "۵", "۶", "۷", "۸", "۹" };
    private static readonly string[] en = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" };
    public static string ToEnglishNumber(this string strNum)
    {
        string chash = strNum;
        for (int i = 0; i < 10; i++)
            chash = chash.Replace(pn[i], en[i]);
        return chash;
    }
    public static string ToEnglishNumber(this int intNum)
    {
        string chash = intNum.ToString();
        for (int i = 0; i < 10; i++)
            chash = chash.Replace(pn[i], en[i]);
        return chash;
    }

and when you want to use this code have to write : txt1.Value.ToEnglishNumber();

Gladsome

Answer 12

public static string ChangeNumberToEnglishNumber(string value)
    {
        string result=string.Empty;
        foreach (char ch in value)
        {

            try
            {
                double convertedChar = char.GetNumericValue(ch);
                if (convertedChar >= 0 && convertedChar <= 9)
                {
                    result += convertedChar.ToString(CultureInfo.InvariantCulture);
                }
                else
                {
                    result += ch;
                }


            }
            catch (Exception e)
            {
                result += ch;
            }

        }

        return result;
    }

Recorder

Kindly add some description as well to support your code. Thanks! – Parallax

Answer 13

Useful and concise:

public static class Utility
    {
        // '۰' = 1632
        // '0' = 48
        // ------------
        //  1632  => '۰'
        //- 1584
        //--------
        //   48   => '0'
        public static string GetEnglish(this string input)
        {
            char[] persianDigitsAscii = input.ToCharArray(); //{ 1632, 1633, 1634, 1635, 1636, 1637, 1638, 1639, 1640, 1641 };
            string output = "";
            for (int k = 0; k < persianDigitsAscii.Length; k++)
            {
                persianDigitsAscii[k] = (char) (persianDigitsAscii[k] - 1584);
                output += persianDigitsAscii[k];
            }

             return output;
        }
    }

Revelationist

If implemented correctly, this is fastest. But you should either use a string builder, or just covert your array back to a string in the end. Also, the input string may contain other characters, so you need to test for that. – Skyway

Answer 14

Use this extension ,also for arabic keyboard for example : "۵", "٥" or "۴", "٤"

static char[][] persianChars = new char[][]
    {
        "0123456789".ToCharArray(),"۰۱۲۳۴۵۶۷۸۹".ToCharArray()
    };
    static char[][] arabicChars = new char[][]
    {
        "0123456789".ToCharArray(),"٠١٢٣٤٥٦٧٨٩".ToCharArray()
    }; 
    public static string toPrevalentDigits(this string src)
    {
        if (string.IsNullOrEmpty(src)) return null;
        for (int x = 0; x <= 9; x++)
        {
            src = src.Replace(persianChars[1][x], persianChars[0][x]);
        }
        for (int x = 0; x <= 9; x++)
        {
            src = src.Replace(arabicChars[1][x], arabicChars[0][x]);
        }
        return src;
    } 

Borders

Answer 15

I recently use this code for 10 record with none-persian chars but reason was to slowly process so you must be check with LINQ before replace it

static Dictionary<char, char> LettersDictionary = new Dictionary<char, char>() {
            {'۰', '0'},
            {'۱', '1'},
            {'۲', '2'},
            {'۳', '3'},
            {'۴', '4'},
            {'۵', '5'},
            {'۶', '6'},
            {'۷', '7'},
            {'۸', '8'},
            {'۹', '9'}
        };

        public static string PersianToEnglish(this string persianStr)
        {
            if (persianStr.Any(x => LettersDictionary.Keys.Contains(x)))
            {
                foreach (var item in persianStr)
                {
                    try { persianStr = persianStr.Replace(item, LettersDictionary[item]); }
                    catch { }
                }
            }
            return persianStr;
        }

Bokbokhara

Answer 16

You can use the Windows.Globalization.NumberFormatting.DecimalFormatter class to parse the string. This will parse strings in any of the supported numeral systems (as long as it is internally coherent).

Kelleher

Answer 17

This will work well for converting Persian/Arabic numbers to English, too:

public static String convertToEnglish(String arabicNumber) {
    for (int i = 0; i <= 9; i++) {
        arabicNumber= arabicNumber.replace((char) (1776 + i),
                (char) (48 + i));
    }
    return arabicNumber;
}

Hemichordate

Answer 18

For .Net6 or above

 public static string ConvertToNumeric(string text)
    {
        var result = new StringBuilder(text.Length);
        foreach (char ch in text)
        {
            result.Append(char.IsDigit(ch) ? char.GetNumericValue(ch) : ch.ToString());
        }
        return result.ToString();
    }

Hanselka